Need 4 Evaporation Speed

http://t3.gstatic.com/images?q=tbn:ANd9GcTbYyWPjwiqMuaSj2oxJ7P4M1FYSh91EcAoYyy-wgBU61y8aZQAfA

Broad Question

Does a liquids surface area affect the liquid's evaporation speed?

Specific Question

Does the surface area of water,cranberry juice, and orange juice affect their evaporation speed?

Variables

Independent Variable:Liquids

Dependent Variable:Liquid Volume

Variables That Need To Be Controlled:Liquids being used,areas

Hypothesis

I hypothesize that water will evaporate the fastest,then orange juice, and then cranberry juice.

Graph of Hypothesis

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Experimental Design

I will most likely conduct my experiment at my house. I am the only person that really needs to work on the experiment.My roles will be pourer,observer,writing down results,measuring,and clean up. I am going to be doing two trials for each liquid: small cup with small surface area and large cup with large surface area. Most likely I will record the information on both printed spreadsheet and directly on the computer. The reason for that is: Safety First! During the experiment I will be writing down just about everything that happens. Such as an accident or a success. I will also have to take pictures and videos of the experiment.

Materials List

1.Water
2.Orange Juice
3.Cranberry Juice
4.Large Cup
5.Small Cup
6.Container with Small Surface Area
7.Container with Large Surface Area
8.Paper Towels
9.Measuring Cup

Detailed Procedure

1.Gather Materials.
2.Take a small cup of water and pour it on a small surface.
3.Return the next day to observe the results.
4.Write down your results in data table.
5.Clean up surface and rinse out cup with hot water.
6.Take a large cup or water and pour it on a large surface.
7.Return the next day to observe the results.
8.Write down your results in data table.
9.Clean up surface and rinse out cup with hot water.
10.Repeat steps 2-9 one more time with water.
11.Repeat steps 2-9 two more times with cranberry juice.
12.Repeat steps 2-9 two more times with orange juice.

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Background Research

Background Research
Directions: In order to present yourself as a researcher who is well-educated on their science fair topic, you will need to gain some background information. Add your research to the table below. Be sure to write everything in your own words and cite your sources using oslis.org. You must use at least one book in your research.

References

Ball, Jackie, et al. Physical Science. Milwaukee, WI: Gareth Stevens Publishing, 2003. Print.

"Chemistry Project on Evaporation of Liquid." Incase.com. N.p., 2010. Web. 20 Jan. 2012. <http://projects.icbse.com/chemistry-258>.

"Relationship between the surface area and the evaporation rate." Education.com. N.p., 2006. Web. 20 Jan. 2012. <http://www.education.com/science-fair/article/effect-surface-area-evaporation-rate/>.

"Surface Area vs Rate of Evaporation." Physics Forums. vBulletin, 2000. Web. 20 Jan. 2012. <http://www.physicsforums.com/showthread.php?t=257601>.

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Results

Data Table

Graphs

Photos

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Data Analysis

Conclusion

The original purpose of this experiment was to find out if the surface area of a liquid would affect its evaporation rate. The results of the experiment were, the first day the first small beaker of water went from 100ml to 60ml. The second small beaker of water was at 50ml. The small beaker of iced tea was at 58ml, and the second small one at 51ml. The first small beaker of Orange Juice was at 49ml and the second being at 46ml. Then I measured the large beakers of liquid. The first large beaker of water was at 96ml, the second being at 97ml. The first large beaker of Ice Tea was at 96ml, the second being at 93ml. The first large beaker of Orange Juice was 97ml and the second was at 96ml.

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Discussion

My hypothesis was that the water would evaporate the fastest, the orange juice second fastest and ice tea the third. My results did not support my hypothesis. This is because after I did my hypothesis my project took a different course of action. There is a relationship between the independent and dependent variables. The independent variable was liquid type and the dependent variable was liquid surface are. Some patterns and trends that my data shows are that the smaller beakers(less surface area)evaporated more liquid than the large beakers(large surface area); this happened every time a measurement was taken. I think the tests I did went smoothly with a few minor problems. At the end of my tests the orange juice and iced tea grew large amounts of mold, this made it difficult to measuring what was left of the liquid. If I could improve my experiment, I would have measured the liquid in a shorter amount of time. Two weeks was too long and the experiment got contaminated with mold, so I was only able to measure one day out of two. An interesting future study might involve robotics and computers. This experiment was a “last resort” choice. But if I get a first choice next time I will choose something with technology. The reason why is because I am somewhat trained and skilled with certain types of technology and I am very interested in it.